We check whether the variable machine is NULL or not before accessing
it. If machine is NULL, exit QEMU with an error, this can avoids a
segfault error.
Markus Armbruster <armbru@redhat.com> adds that the segfault can be
reproduced as follows:
$ qemu-system-xtensa -cpu help
Signed-off-by: Dunrong Huang <riegamaths@gmail.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
}
loc_set_none();
+ if (machine == NULL) {
+ fprintf(stderr, "No machine found.\n");
+ exit(1);
+ }
+
if (machine->hw_version) {
qemu_set_version(machine->hw_version);
}
data_dir = CONFIG_QEMU_DATADIR;
}
- if (machine == NULL) {
- fprintf(stderr, "No machine found.\n");
- exit(1);
- }
-
/*
* Default to max_cpus = smp_cpus, in case the user doesn't
* specify a max_cpus value.